Working on translation of Rascal 'visit'.
Merge branch 'master' of https://github.com/cwi-swat/rascal.git
Partially enabled call-by-reference in case of temporary variables in
the muRascal.
Working on translation of Rascal 'visit' expression: some progress.
Merge branch 'master' of https://github.com/cwi-swat/rascal.git